Exercise 3

The twins Jill and Bill are taking different sections of MAT 152 taught by different professors who give different tests. Both made an 80 on the last test (out of a possible 100 points). Here is the distribution of the grades for each of the classes for that test.

Jill's class: 64, 67, 73, 73, 73, 74, 77, 77, 78, 78, 79, 80, 80, 82, 91, 94, 100

Bill's class: 43, 65, 68, 73, 75, 76, 76, 77, 79, 80, 80, 80, 80, 85, 86, 87, 88, 90, 92, 96

1. Find Jill's percentile rank relative to her class.
2. Find Bill's percentile rank relative to his class.
3. Based on the previous parts of this exercise, who did relatively better? How do you know?